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Anyị na-echekwa ngwaahịa ọla kọpa beryllium

n'ụdị nha na oke iwe.

Anyị nwere ike ịkwado ọnụọgụ iji nabata ma oke olu
na mkpa obere olu.Mgbe ị na-achọ ngwaahịa ọla kọpa beryllium, ị nwere ike ịdabere na anyị.

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